Electron-impact excitation of B+ using the R-matrix with pseudo-states method

We have carried out several R-matrix with pseudo-states (RMPS) calculations for the electron-impact excitation of B+. Maxwell-averaged effective collision strengths have been determined for excitations between the lowest 20 terms, including all those arising from the 2s3l and 2s4l configurations. A...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Badnell, N.R., Griffin, D.C., Mitnik, D.M.
Formato: JOUR
Materias:
Electron energy levels
Fusion reactors
High temperature effects
Magnetic devices
Mathematical models
Numerical analysis
Electron impact excitation
Magnetic fusion reactors
Pseudo states method
Molecular physics
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09534075_v36_n7_p1337_Badnell
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:We have carried out several R-matrix with pseudo-states (RMPS) calculations for the electron-impact excitation of B+. Maxwell-averaged effective collision strengths have been determined for excitations between the lowest 20 terms, including all those arising from the 2s3l and 2s4l configurations. A comparison of results from 114 term and 134 term close-coupling (CC) RMPS calculations demonstrates the convergence in the pseudo-state expansion representing the continuum and high bound-states. Comparison of the 114CC RMPS results with those from a 20CC R-matrix calculation, using the same 114 term configuration interaction target, shows a reduction in the effective collision strengths by up to a factor of two at higher temperatures for transitions to n = 4. The modelling of spectral emission from boron, and from n = 4 terms in B+ in particular, is important for studying impurity influx in both current (TEXTOR) and future (ITER) magnetic fusion reactors.

Ejemplares similares